Track forum general chit chat.

[XKxRome0ox]

reporting back from my day at autoclub speedway with Speedventures

I had been to speedway twice before so I felt like I knew the track enough to not be a total noob ..
but I ended up being a total noob

I totally misjudged the entry speed into turn 3 in my first lap and went 4 wheels off
no harm done but it did mess with my head
got black flagged so my tires could be checked
then in a later session I got the "meatball" flag (red circle black flag) because my hood didnt latch properly on one side

I was in low intermediate group (purple) but the group was a total mix bag in terms of skill level
there were some sub 2 minute laps while others were high 2's
I didn't have a timer but I have a dashcam... watched some footage and checked the time on the footage
I saw one lap at 2:15 which was the best out of the 3 that I watched

it was HOT so tires were starting to give up later in the day
running michelin pilot 4s
brakes were great- ST60 in front with Pagid race pads, stock brakes in rear

all my previous track and autox experience was in a 2016 328i
I was wishfully thinking I would pick up right where I left off 2 years ago and the M3 would just magically make up for any deficiencies
but I was totally wrong
I need to work on the basics and focus on finding the right lines and control

[roastbeef]

Why's the reason for the aftermarket rotors dparm? Cost efficiency or oem isn't good enough? Or both?

[roastbeef]

Originally Posted by XKxRome0ox

reporting back from my day at autoclub speedway with Speedventures

I had been to speedway twice before so I felt like I knew the track enough to not be a total noob ..
but I ended up being a total noob

I totally misjudged the entry speed into turn 3 in my first lap and went 4 wheels off
no harm done but it did mess with my head
got black flagged so my tires could be checked
then in a later session I got the "meatball" flag (red circle black flag) because my hood didnt latch properly on one side

I was in low intermediate group (purple) but the group was a total mix bag in terms of skill level
there were some sub 2 minute laps while others were high 2's
I didn't have a timer but I have a dashcam... watched some footage and checked the time on the footage
I saw one lap at 2:15 which was the best out of the 3 that I watched

it was HOT so tires were starting to give up later in the day
running michelin pilot 4s
brakes were great- ST60 in front with Pagid race pads, stock brakes in rear

all my previous track and autox experience was in a 2016 328i
I was wishfully thinking I would pick up right where I left off 2 years ago and the M3 would just magically make up for any deficiencies
but I was totally wrong
I need to work on the basics and focus on finding the right lines and control

its a diminishing skill for sure, so don't feel bad. the car is capable of better than 2:15 in stock form with street tires, but its ok to ease back into it. most people have roval commitment issues there. where do you feel like you're losing the most time?

[dparm]

Originally Posted by roastbeef

Why's the reason for the aftermarket rotors dparm? Cost efficiency or oem isn't good enough? Or both?

As I mentioned, the OEM rotors are fine. But for less money you can go aftermarket and get benefits like weight savings, improved cooling, and potentially better longevity. I was just asking if there's any big differences between DBA and GiroDisc. From my perspective, they're nearly identical.

People have cited premature cracking from the OEM rotors as the biggest reason to dump them but I never saw that on my first front set (about 800 minutes/12 track days) or rears (2000 minutes/24 track days, and still within spec). I hit minimum thickness well before the cracks because too big. Perhaps the faster Z06s and ZR1s have that problem, but my Grand Sport doesn't.

[XKxRome0ox]

Originally Posted by roastbeef

its a diminishing skill for sure, so don't feel bad. the car is capable of better than 2:15 in stock form with street tires, but its ok to ease back into it. most people have roval commitment issues there. where do you feel like you're losing the most time?

at every turn? lol



so back when i was at speedway with the f30, i got pretty comfortable with the track
i had the braking points, entry speeds, and apexes mostly figured out and was pretty consistent
i never went off track at any point with the f30

with the e90 m3 on first lap... i came into turn 3 too hot with 2 cars pretty close behind me and had to go off track to avoid any potential for collision

i was inconsistent with turn 9 all day

and yes, the roval scared the piss out of me
but i kept pushing a little faster and faster
i was usually hitting 132mph on the straight
then up to 138... got up to 142 mph twice
but i would let off on the throttle quite a bit going from turn 1 to turn 2
i was using MDM and i noticed the traction light going crazy approaching turn 2 every single time

but i tried to carry more speed through turn 2 after getting caught up by a miata that i had passed on the straight
so the miata was carrying way more speed after turn 1 while i was letting off the throttle

i saw that i was usually down to around 100 mph when approaching turn 2
so later laps, i maintained more throttle ... and passed turn 2 at 110 mph

i have a lot of work to do

[dparm]

What is it about turn 9 that gave you problems? Were you actually having problems with 7A/8A and paying for it on the next one?

What sort of line did you take through 7/8/9?

I wonder if TC was sensing aerodynamics (insufficient downforce and some lift generation) unsettling the car at high speed. You might have actually had a tire start lifting off the pavement a little bit.

[roastbeef]

Originally Posted by dparm

What is it about turn 9 that gave you problems? Were you actually having problems with 7A/8A and paying for it on the next one?

What sort of line did you take through 7/8/9?

7-8-9 is probably the most technical part of this course. i have to lift to about half throttle through 7-8 because if i hit the inside berm of 8 with edc it will unsettle the car and lean it to the left and setup turn 9's braking zone poorly. i can still take a little bite of the curbing, but too much and the car's speed will carry you to the very edge of the track with the inside rubber in the air. turn 9 is a decreasing radius turn, and too much left leaning bias is slow. this is also an area where you MDM can't defeat physics for you if you get too much momentum. the area is completely flat, so there is no banking to help.
you'll be going so fast through 7-8 that there is very little time to settle the car for the braking zone so you don't get too much left bias as you trail brake. its easy to overdo it.

plus, 10-11 isn't as sharp as they map it- its a wide open throttle switcheroo, so a 5-8 mph difference in turn 9 can really affect your top speed in a large portion of the track.

[SQ13]

Originally Posted by M3 Number 86

Texas cares about front plates?!

Yes apparently. Last summer I got pulled over for no front plate while everyone around me was speeding...warning. A few months later I got pulled over for no front plate while everyone else was? Speeding. $20 fix it ticket while they could’ve made $200 off a speeder...

I only installed it so I don’t give police a reason to pull me over. I have a halo seat which might cause problems if I do get pulled over. Luckily I’m gonna store it across the street from COTA starting Thursday.

[M3 Number 86]

Originally Posted by XKxRome0ox

at every turn? lol



so back when i was at speedway with the f30, i got pretty comfortable with the track
i had the braking points, entry speeds, and apexes mostly figured out and was pretty consistent
i never went off track at any point with the f30

with the e90 m3 on first lap... i came into turn 3 too hot with 2 cars pretty close behind me and had to go off track to avoid any potential for collision

i was inconsistent with turn 9 all day

and yes, the roval scared the piss out of me
but i kept pushing a little faster and faster
i was usually hitting 132mph on the straight
then up to 138... got up to 142 mph twice
but i would let off on the throttle quite a bit going from turn 1 to turn 2
i was using MDM and i noticed the traction light going crazy approaching turn 2 every single time

but i tried to carry more speed through turn 2 after getting caught up by a miata that i had passed on the straight
so the miata was carrying way more speed after turn 1 while i was letting off the throttle

i saw that i was usually down to around 100 mph when approaching turn 2
so later laps, i maintained more throttle ... and passed turn 2 at 110 mph

i have a lot of work to do

Is this Ed?

[M3 Number 86]

Originally Posted by dparm

What is it about turn 9 that gave you problems? Were you actually having problems with 7A/8A and paying for it on the next one?

What sort of line did you take through 7/8/9?

I wonder if TC was sensing aerodynamics (insufficient downforce and some lift generation) unsettling the car at high speed. You might have actually had a tire start lifting off the pavement a little bit.

Originally Posted by XKxRome0ox

at every turn? lol

[img]https://www.autoclubspeedway.com/~/m...9E1E298DF.ashx[/img]

so back when i was at speedway with the f30, i got pretty comfortable with the track
i had the braking points, entry speeds, and apexes mostly figured out and was pretty consistent
i never went off track at any point with the f30

with the e90 m3 on first lap... i came into turn 3 too hot with 2 cars pretty close behind me and had to go off track to avoid any potential for collision

i was inconsistent with turn 9 all day

and yes, the roval scared the piss out of me
but i kept pushing a little faster and faster
i was usually hitting 132mph on the straight
then up to 138... got up to 142 mph twice
but i would let off on the throttle quite a bit going from turn 1 to turn 2
i was using MDM and i noticed the traction light going crazy approaching turn 2 every single time

but i tried to carry more speed through turn 2 after getting caught up by a miata that i had passed on the straight
so the miata was carrying way more speed after turn 1 while i was letting off the throttle

i saw that i was usually down to around 100 mph when approaching turn 2
so later laps, i maintained more throttle ... and passed turn 2 at 110 mph

i have a lot of work to do

Is this J Ed K?

[M3 Number 86]

Originally Posted by dparm

What is it about turn 9 that gave you problems? Were you actually having problems with 7A/8A and paying for it on the next one?

What sort of line did you take through 7/8/9?

I wonder if TC was sensing aerodynamics (insufficient downforce and some lift generation) unsettling the car at high speed. You might have actually had a tire start lifting off the pavement a little bit.

7/8 is actually just a continuation of a long straight prior to it. Slight lift and point the car. the issue is with the stretch between 8 and 9, it's shitty asphalt and off cambered, so the braking is tricky, not the best level of grip. If you lose it there, you're sliding into the grass at pretty high speeds and hitting tire wall right away. Turn 9 is just a really tight turn that you need to just take it slow and try to get the best exit speed.....

who knows though, I'm slow lol

[XKxRome0ox]

Originally Posted by M3 Number 86

Is this Ed?

yes
thought you knew already
:hi:

[Richbot]

If anyone wants my Apex 17's, I'm not hardcore enough for these falkens and rather than buy another set of 275/40-17 Conti ECS, which would be very cushy and cheap and the smart move, I'm going to sell them and get something more blang

https://www.m3post.com/forums/showth...6#post25035436

[roastbeef]

Originally Posted by Richbot

If anyone wants my Apex 17's, I'm not hardcore enough for these falkens and rather than buy another set of 275/40-17 Conti ECS, which would be very cushy and cheap and the smart move, I'm going to sell them and get something more blang

https://www.m3post.com/forums/showth...6#post25035436

Think they'll be too wide for the wife's 335d?

[Richbot]

Yes

[M3 Number 86]

Originally Posted by Richbot

If anyone wants my Apex 17's, I'm not hardcore enough for these falkens and rather than buy another set of 275/40-17 Conti ECS, which would be very cushy and cheap and the smart move, I'm going to sell them and get something more blang

https://www.m3post.com/forums/showth...6#post25035436

Haha I want to go more bling too.

[bigjae1976]

Originally Posted by Richbot

If anyone wants my Apex 17's, I'm not hardcore enough for these falkens and rather than buy another set of 275/40-17 Conti ECS, which would be very cushy and cheap and the smart move, I'm going to sell them and get something more blang

https://www.m3post.com/forums/showth...6#post25035436

Dude...let me know if you want to sell just the rims.

[admranger]

Originally Posted by XKxRome0ox

reporting back from my day at autoclub speedway with Speedventures

I had been to speedway twice before so I felt like I knew the track enough to not be a total noob .. but I ended up being a total noob

I totally misjudged the entry speed into turn 3 in my first lap and went 4 wheels off

I'm struggling to understand how this happens.

Lap one is a recon lap to ensure you familiarize yourself with track conditions, which corner worker stands are occupied and if the corner workers look like they give a damn, and find escape paths if your brakes fail or you screw up your braking. It's not for going 'flat out'. You, your tires, brakes, and the car's fluids are not warmed up yet.

[warp10]

APR 250 wing up for sale.

$750 shipped plus PP

[SQ13]

Originally Posted by admranger

I'm struggling to understand how this happens.

Lap one is a recon lap to ensure you familiarize yourself with track conditions, which corner worker stands are occupied and if the corner workers look like they give a damn, and find escape paths if your brakes fail or you screw up your braking. It's not for going 'flat out'. You, your tires, brakes, and the car's fluids are not warmed up yet.

I usually spend first session adjusting to the car, track, and conditions. I’ll have to be especially careful at COTA on Friday, since it’ll be my first time on track in 11 months..and in the dark....

[dbyrd]

Originally Posted by SQ13

I usually spend first session adjusting to the car, track, and conditions. I’ll have to be especially careful at COTA on Friday, since it’ll be my first time on track in 11 months..and in the dark....

COTA has developed a few large bumps that might initially catch you off-guard in the dark.

Between 9-10 at track out from 9.

Inside of turn 18 at the end of the carousel. I used to set up for this last apex, but now, I displace it. If you set it up correctly, you can still be setup well for 19.

I instruct for Edge Addicts, but unfortunately, I can't make it. Let us know how it goes!

[dparm]

Originally Posted by SQ13

I usually spend first session adjusting to the car, track, and conditions. I’ll have to be especially careful at COTA on Friday, since it’ll be my first time on track in 11 months..and in the dark....

Come find me and say hello! I'll be in a blue Corvette with white and red stripes. Happy to provide some pointers on COTA in case you forgot, haha.

I'm not really too worried about lap times for this event. The first sessions will be brutally hot and then the night stuff will be a bit of an unknown. I just want some sweet glowing-rotor photos.